PoS will do nothing but shrink the value of Bitcoins.
You know why Bitcoins is the most valuable cryptocurrency of all? It's because people get paid for spending their electricity through mining (processing) the transactions using the computational power of their hardware. You may have already seen PoS coins before, don't you remember what happened to them?
If we decide to generate a very low amount of Bitcoins per year through PoS, new investors will not be able to buy because of less production as huge whales who possess a lot of bitcoins, are not going to release them in markets.
And if we generate a higher amount, that will also be harmful to its value as everybody will dump.
Whatever is going on, is good. So let it be.